<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="{:url('admin/demo/add')}" method="post">
        添加省:
        <input type="text" name = 'parents'>
        添加市:
        <input type="text" name = 'children'>
        <button type="submit">添加</button>

</form>

</body>
</html>